Advertising device



P. E. Y KLoPsTEe ADVERTIS ING DEVICE May 31, 1927. 1153.0,490

Filed June 25, 1925 Patented May 31, 1927.`

PA'UL E. KLOPSTEG, 0F CHICAGO,

PANY, OF CHICAGO, ILLINOIS,

This invention relates to has for its object some article such as a coin,

TES PATENT OFFICE.

ILLINOIS, ASSIGNOR TO CENTRAL SCIENTIFIC COH- A CORPORATION OF ILLINOIS.

ADVERTISING DEVICE.

Application filed June 25, `19585. Serial No. 39,481.

advertising and to produce movement of doll, or the like,

within a limited area by invisible forces produced by concealed means. Generally speakins, Ject include some this is accomplished by making the obconducting material an'd supporting it on a poor conductor within a rotatory magnetic A simple and accomplishing the accompanying Fig. 1 is a wiring field.

preferred form of means for this object is illustrated in drawings wherein diagram showing how single phase alternating current may be applied to a Gramme magnetic field;

ring to produce a rot-atory Fig. 2 1s a sectional View illustrating a Gramme ring and a large watch glass in suitable relation for accomplishing the desired object;l

Fig. 3 is a side elevation showing the watch glass and Gramme ring associated with acasing for concealing the ring, and

Fig. 4 is a side used in connection elevation of a casing lfor enclosing a portion of the electric devices with the Gramme ring.

Referring 'to the diagram in Fig. 1, 10 'indicates the laminated ring equipped wit 3o phase ring by winding 11 at 13 choke coil 16 and a lead core of the Gramme a winding 11. Single alternating current is supplied to the a conductor 12 connected with the lead 14, at 15 by a by a 17, and at 18 by the choke coil y16, a non-inductive resistance 19 and a lead 20. This a paratus netic fiel particul of this invention tensity, form and the ring. Y resistance may to permit them sition entirely concealed from view.

The choke coil produces a rotatory magarly suited for the objects because it varies in inlocation with` 'respect to and non-inductive mounted within a box 21 to be readily located in a po- The Gramme ring is preferably .concealed within 'a casing 22 a seat at its top for a which the article to A cylindrical skirt 27 extends casin and conceals the inner portion of the ring rom view. If

be located be ordinary window of opaque material p neath nate it and the rotating provided with large watch glass 24 on be moved is supported. through the desired, a lamp 26 may the watch glass to ill object although the illumination will, in most for that purpose.

Aby com umi- A device so constructed may be readily located 1n a showwindow or any other place where it is desired to attract attention. It is set 1n operation by closing the circuit, supplying t e current to the Gramme ring and setting the coin or other object spinning in the proper direction on the watch glass. The rotatory magnetic field will induce eddy currents in the metal of the coin, or small piece of. conducting material, in a doll or the like, and cause it to spinv about its base. With such avarying magnetic field the coin or other object will not only spin, but will travel an uncertain path about the watch glass.

It is necessary that the support be of poorly conducting material this quality, is transparent an'd is a stock article. By illuminat-ing the watch glass the mystery as to thekforce causing the movement is increase because it permits the observer to seepthat there are no moving parts beneath the s upport and within the circumference of the the watch glass ring. The concavit-y of article from serves to restrain the spinning working off the edge of the sup adds mystery to the cause of t e wandering movement. It is, however, not essential to the broad aspects of the invention that the support be of transparent material or have a concave upper surface, although it is necessary that the support be of poorly conducting material. A smooth sur ace on the support contributes to the spinning movement, but it is not necessary that the surface have any regular form, and bum s, ridges or other irregularities, may be use to heighten the mysterious effect or control the path of travel.

A rotxJtory magnet field may be produced ining alternating currents by a great variety of means, some of which may be arranged to pro'duce a field of substantially uniform characteristics as, for example, by applying either three phase alternatmg current 1n star or delta connection or two phase alternating current in quadrature. This invention lends itself to a great varety of forms also in the nature of the object. For use in banks a coin is appropriately sugpeive and adds to the mystery by reason o its remainm on ed as its ge as well and wan ering movement. For

ort, and also other places other objects will have particular advantages. For example in the juvenile department, a cat or dog chasing its tail might ,attract more attention than avcon spmning.

Use has been made of Specic description and illustration in order to disclose the invention, but it is' intended that nothin contained herein shall unnecessarily limit the following claims, or require a construction thereof that would permit the substance of the invention to be used without infringement.

I claim as my invention:

l. In an advertising device, the combination of a support composed-of poorly conducting transparent material presenting a smooth surface on top, means for illuminating the support, stationary means adjacent to the support for netic lield over said smooth surface, and an object including conducting material and resting on said surface with a relatively small area of contact compared with the total area of the object.

2. In an advertising device, a supportV of poorly conducting material presenting a smooth surface at its upper sid-e, an object 'including conducting material resting on and presenting a relatively smooth area of Contact to the smooth surface of the support, and stationary means adjacent to the support for producingI an unsymmertical rotatory magnetic field extending over the surface of the su port.

3. In an adfvertising device, the combination of a casing having an opening on its upper side, a transparent support extending across said opening, means within the casing to produce a rotatory magnetic fieldabove the support, a tubular shieldextending downwardly from said opening to conceal said means from view through said support, means to illuminate the space in the casing below the support, and an object producing a rotatory magcontaining conducting material freely rotatable on the support.

4. In an advertising device, the combination of a coil lying generally horizontal, a source of alternating current and connections between the source and the coil for producing a rotary magnetic field, means for concealing the coil from view, a suggestive object including a conductor, and means to support the object for spinning movement in the field about an upright axis.

5. In an advertising device, the combination of a support of poorly conducting material, a Gramme ring adjacent to the support, means for connecting the Gramme rinor with the source of alternating current an( an object resting on the support with a relatively small area of contact and including conducting material.

6. In an advertising device, the combination of a Gramme ring, a watch glass above the ring, means for connecting the ring with the Source of alternating current to produce a rotatory magnetic field, and a conductor adapted to spin on said glass.

7. In an advertising device, the combination of a casing having a vertical opening therein. means surrounding said opening for producing a rotatory magnetic.field, a support of poorly conducting material above said opening and a rotary object resting on said support and including conducting material.

8. In an advertising device, the combination of a support presentino a. smooth surface on top, an object including conducting material resting on and presenting a relatively smooth area of contact to the surface of the support, and means adjacent to the support for combining alternating current to produce a rotatory magnetic field including said object.

In testimony whereof I aflix my signature.

PAUL E. KLOPSTEG. 

